OW=false;
function openWindow(page, id, pgn){
	if(OW){
		OW.close();
	}
	sb=(page!=="Plattegronden")?"scrollbars=no":"scrollbars=yes";
	OW=window.open('index.php?go=huizen.show'+page+'&id='+id + '&pagenr=' + pgn,page,sb + ",width=600,height=428");
	return false;
}